Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4769750

Anmeldetag

12. Januar 2024

Veröffentlichung

17. Juli 2025

Rechtsraum

EP

Abstract

A battery cell (20), a battery (100), and an electric device are disclosed. The battery cell (20) includes a housing (21) and a pressure relief component (22); the housing (21) includes a first wall portion (211), and the pressure relief component (22) is arranged on the first wall portion (211). The pressure relief component (22) is provided with a first groove (221). The first groove (221) is recessed from a first surface (2111) in a thickness direction of the first wall portion (211) towards a second surface (2112). The first groove (221) defines at least one predetermined pressure relief area (P). The pressure relief component (22) is configured to be capable of cracking along at least a portion of the first groove (221) when the battery cell (20) relieves pressure; where a sum S<1> of areas of all the predetermined pressure relief areas (P) is 0.03 to 0.3 times an area S<2> of the first surface (2111). This can reduce the risk of the housing (21) of the battery cell (20) bursting, exploding, or catching fire due to untimely pressure relief of the pressure relief component (22), and reduce the risk of leakage problems caused by premature actuation or fatigue cracking of the pressure relief component (22) after long-term use of the battery cell (20), which is beneficial to improving the service life and service reliability of the battery cell (20).

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China